<template>
	<s-layout title="购物车" tabbar="/pages/index/cart" :bgStyle="{ color: '#fff' }">
		<s-empty
			v-if="state.list.length === 0"
			text="购物车空空如也,快去逛逛吧~"
			icon="/static/cart-empty.png"
		/>

		<!-- 头部 -->
		<view class="cart-box ss-flex ss-flex-col ss-row-between" v-if="state.list.length">
			<view class="cart-header ss-flex ss-col-center ss-row-between ss-p-x-30">
				<view class="header-left ss-flex ss-col-center ss-font-26">
					共
					<text class="goods-number ui-TC-Main ss-flex">{{ state.list.length }}</text>
					件商品
				</view>
				<view class="header-right">
					<button
						v-if="state.editMode"
						class="ss-reset-button"
						@tap="state.editMode = false"
					>
						取消
					</button>
					<button v-else class="ss-reset-button ui-TC-Main" @tap="state.editMode = true">
						编辑
					</button>
				</view>
			</view>
			<!-- 内容 -->
			<view class="cart-content ss-flex-1 ss-p-x-30 ss-m-b-40">
				<uni-swipe-action>
					<view
						class="goods-box ss-r-10 ss-m-b-14"
						v-for="item in state.list"
						:key="item.id"
					>
						<uni-swipe-action-item  :right-options="options"  @click="deleteById({content:{id:item.id}})">
							<view class="ss-flex ss-col-center">
								<label
									class="check-box ss-flex ss-col-center ss-p-l-10"
									@tap="onSelectSingle(item.id)"
								>
									<radio
										:checked="state.selectedIds.includes(item.id)"
										color="var(--ui-BG-Main)"
										style="transform: scale(0.8)"
										@tap.stop="onSelectSingle(item.id)"
									/>
								</label>
								<s-goods-item
									:title="item.title"
									:img="item.goodsSku.image || item.goods.image"
									:price="item.goodsSku.price"
									:skuText="item.skus"
									priceColor="#FF3000"
									:titleWidth="400"
								>
									<template v-if="!state.editMode" v-slot:tool>
										<su-number-box
											:min="0"
											:max="item.goodsSku.stock"
											:step="1"
											v-model="item.quantity"
											@change="onNumberChange($event, item)"
										></su-number-box>
									</template>
								</s-goods-item>
							</view>

							<!-- <template v-slot:right>
								<view
									@click="
										deleteById({ position: 'right', content: { text: '删除' } })
									"
									class="slot-button"
									><text class="slot-button-text">删除</text></view
								>
							</template> -->
						</uni-swipe-action-item>
					</view>
				</uni-swipe-action>
			</view>
			<!-- 底部 -->
			<su-fixed bottom :val="48" placeholder v-if="state.list.length > 0" :isInset="false">
				<view
					class="cart-footer ss-flex ss-col-center ss-row-between ss-p-x-30 border-bottom"
				>
					<view class="footer-left ss-flex ss-col-center">
						<label class="check-box ss-flex ss-col-center ss-p-r-30" @tap="onSelectAll">
							<radio
								:checked="state.isAllSelected"
								color="var(--ui-BG-Main)"
								style="transform: scale(0.8)"
								@tap.stop="onSelectAll"
							/>
							<view class="ss-m-l-8"> 全选 </view>
						</label>
						<text>合计：</text>
						<view class="text-price price-text">
							{{ state.totalPriceSelected }}
						</view>
					</view>
					<view class="footer-right">
						<button
							v-if="state.editMode"
							class="ss-reset-button ui-BG-Main-Gradient pay-btn ui-Shadow-Main"
							@tap="onDelete"
						>
							删除
						</button>
						<button
							v-else
							class="ss-reset-button ui-BG-Main-Gradient pay-btn ui-Shadow-Main"
							@tap="onConfirm"
						>
							去结算
							{{ state.selectedIds?.length ? `(${state.selectedIds.length})` : '' }}
						</button>
					</view>
				</view>
			</su-fixed>
		</view>
	</s-layout>
</template>

<script setup>
	import { computed, reactive, unref } from 'vue';
	import { onShow, onPageScroll, onPullDownRefresh } from '@dcloudio/uni-app';
	import $platform from '/shop/platform/index.js';
	import cartStore from '/shop/store/cart.js';
	import $router from '/shop/router/index.js';
	import $helper from '/shop/helper/index.js';

	const sys_navBar = $platform.navbar;
	const cart = cartStore();

	const state = reactive({
		editMode: false,
		list: computed(() => cart.list),
		selectedList: [],
		selectedIds: computed(() => cart.selectedIds),
		isAllSelected: computed(() => cart.isAllSelected),
		totalPriceSelected: computed(() => cart.totalPriceSelected()),
	});

	const options =  [
		{
			text: '删除',
			style: {
				backgroundColor: 'rgb(255,58,49)',
			},
		},
	] ;
	// 单选选中
	function onSelectSingle(id) {
		cart.selectSingle(id);
	}
	// 全选
	function onSelectAll() {
		cart.selectAll(!state.isAllSelected);
	}

	function deleteById(e) {
		console.log('id: ', e.content.id);
		cart.deleted(e.content.id);
	}

	// 结算
	function onConfirm() {
		let goods_list = [];
		state.selectedList = state.list.filter((item) => state.selectedIds.includes(item.id));
		state.selectedList.map((item) => {
			goods_list.push({
				goodsId: item.goodsId,
				quantity: item.quantity,
				attrs: item.goodsSku.skus,
			});
		});
		if (goods_list.length === 0) {
			$helper.toast('请选择商品');
			return;
		}
		$router.go('/pages/order/confirm', {
			data: JSON.stringify({
				orderType: 'goods',
				goodsList: goods_list,
				from: 'cart',
			}),
		});
	}

	function onNumberChange(e, cartItem) {
		if (e === 0) {
			cart.delete(cartItem.id);
			return;
		}
		if (cartItem.quantity === e) return;
		cartItem.quantity = e;

		console.log('cartItem  cart ==> ', cartItem);

		cart.update({
			id: cartItem.id,
			goodsId: cartItem.goodsId,
			quantity: e,
		});
	}
	async function onDelete() {
		cart.deleted(state.selectedIds);
	}

	onPullDownRefresh(() => {
		setTimeout(function () {
			uni.stopPullDownRefresh();
		}, 800);
	});
</script>

<style lang="scss" scoped>
	.slot-button {
		/* #ifndef APP-NVUE */
		display: flex;
		height: 100%;
		/* #endif */
		flex: 1;
		flex-direction: row;
		justify-content: center;
		align-items: center;
		padding: 0 20px;
		background-color: #ff5a5f;
	}

	.slot-button-text {
		color: #ffffff;
		font-size: 14px;
	}

	:deep(.ui-fixed) {
		height: 72rpx;
	}

	.cart-box {
		width: 100%;

		.cart-header {
			height: 70rpx;
			background-color: #f6f6f6;
			width: 100%;
			position: fixed;
			left: 0;
			top: v-bind('sys_navBar') rpx;
			z-index: 1000;
			box-sizing: border-box;
		}

		.cart-footer {
			height: 100rpx;
			background-color: #fff;

			.pay-btn {
				width: 180rpx;
				height: 70rpx;
				font-size: 28rpx;
				line-height: 28rpx;
				font-weight: 500;
				border-radius: 40rpx;
			}
		}

		.cart-content {
			margin-top: 70rpx;

			.goods-box {
				background-color: #fff;
			}
		}
	}
</style>
